Which One of These Examples Best Reflects the Role That

Which one of these examples best reflects the role that self-concept typically plays in achievement and school behaviour?

A) Jaime thinks of herself as physically fit, so she does not think she needs to participate in sports or other physical activities.
B) Sheri does not want to take any more math classes because she knows she is already good at math.
C) Nettie does not think she is very popular, so she smiles at others and tries to talk to them so they will like her.
D) Deborah knows she is a good reader, so she takes an extra reading class as an elective.